Display hook



FIG. 1 is a perspective view of a display hook showing my new design with the broken line showing of an article being for illustrative purposes only and forming no part of the claimed design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a side elevational view thereof with the opposite side being a mirror image thereof;

FIG. 5 is a bottom plan view thereof; and,

FIG. 6 is a rear elevational view thereof. 

The ornamental design for a display hook, as shown and described. 